Gather all ingredients and materials.

Bring the water, butter with a little salt to a boil.

Remove from heat and add the flour all at once and stir. Return it to medium heat and keep stirring. The dough is ready for the next step when you hear it sizzle and when it sticks lightly to the bottom. This may take several minutes. Keep stirring.

Put the dough in a cold bowl and add the first egg. Keep stirring until the egg is fully incorporated.

If you don’t switch pans, chances are your egg will be fried.

The dough may return to the warm bowl. The bowl no longer needs to be on the heat.

Add the next egg when the previous egg is fully incorporated. Add the last egg little by little until the batter is the right thickness. The batter has the right consistency when it sticks to the spatula like a triangle.